Australian Business Number

\b\d{2}\.\d{3}\.\d{3}\.\d{3}\b

Matches a 11-digit number of the format NN.NNN.NNN.NNN delimited by dot.

1

\b\d{2}-\d{3}-\d{3}-\d{3}\b

Matches a 11-digit number of the format NN-NNN-NNN-NNN delimited by hyphen.

1

\b\d{2} \d{3} \d{3} \d{3}\b

Matches a 11-digit number of the format NN NNN NNN NNN delimited by space.

1

\b\d{11}\b

Matches a 11-digit number without a delimiter.

1